Kitina, Dimir Necrosage

Partner with Nystri, Grace of the House
At the beginning of your end step, create a 0/1
blue and black Spirit Horror creature token.
Whenever a creature you control becomes
unblocked, you may have that creature assign
no combat damage this turn. If you do,
defending player loses life equal to Kitina,
Dimir Necrosage's power and you gain that
much life.